Yes, all rooms can have a minimum of 3 people. But depending on how crowded the ship is, it doesn't matter how many your cabin can hold, they will only let you book 2 people. They have a maximum number of people for the life boats, so it depends on how many people in your section of the ship. Also if there are a lot of kids on your cruise, if the clubs hit their maximum, you would not be able to book the cruise with your child in that age category.